EP0370222B1 - Filtre pour système de climatisation de véhicule automobile - Google Patents

Filtre pour système de climatisation de véhicule automobile Download PDF

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Publication number
EP0370222B1
EP0370222B1 EP89119024A EP89119024A EP0370222B1 EP 0370222 B1 EP0370222 B1 EP 0370222B1 EP 89119024 A EP89119024 A EP 89119024A EP 89119024 A EP89119024 A EP 89119024A EP 0370222 B1 EP0370222 B1 EP 0370222B1
Authority
EP
European Patent Office
Prior art keywords
filter
filter body
filter according
frame
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89119024A
Other languages
German (de)
English (en)
Other versions
EP0370222A3 (en
EP0370222A2 (fr
Inventor
Kay Dipl.-Ing.(Fh) Seidensticker
Gebhard Dipl.-Ing. Schweizer
Reinhold Dipl.-Ing.(Fh) Weible
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Priority to DE19898916168 priority Critical patent/DE8916168U1/de
Publication of EP0370222A2 publication Critical patent/EP0370222A2/fr
Publication of EP0370222A3 publication Critical patent/EP0370222A3/de
Application granted granted Critical
Publication of EP0370222B1 publication Critical patent/EP0370222B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0415—Beds in cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0658—Filter elements specially adapted for their arrangement in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/25—Coated, impregnated or composite adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/302—Dimensions
    • B01D2253/31—Pore size distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/06—Details of supporting structures for filtering material, e.g. cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/10—Multiple layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H2003/0691—Adsorption filters, e.g. activated carbon

Definitions

  • the invention relates to a filter for an air conditioning system of a motor vehicle with a filter body made of a material arranged in several layers with open pores which are coated with adsorbent, in particular activated carbon grains, and with a plastic frame surrounding the filter body.
  • the frame is produced as a separate component, in which the filter body formed from three layers is inserted.
  • a filter is not suitable for use in a motor vehicle, in particular for use as an odor filter, since inadequate sealing between the edge of the filter body and the frame is ensured.
  • settlement will occur as a result of the loads that occur during operation of a motor vehicle, so that leaks occur between the edge of the filter body and the frame.
  • leaks immediately render them unusable, since the function as an odor filter can then no longer be guaranteed.
  • the invention has for its object to provide a filter of the type mentioned in such a way that a safe and, above all, permanent seal between the filter body and the frame surrounding it is ensured.
  • the frame is integrally formed on the filter body, and in that between the filter body and the frame a connection encompassing the edge of the filter body over its entire strength due to a hardened material which has penetrated into the edge of the filter body to a predetermined depth consists.
  • the edge of the filter body is surrounded by a prefabricated frame part and that the space between this frame part and the edge of the filter body is poured out with the hardening material.
  • the frame part can bring about the strength required for the filter, so that the hardening material has only the function of a connecting element.
  • the hardening material with a wall thickness of at least 1.0 mm projects beyond the edge of the filter body and forms the frame.
  • an additional, prefabricated frame can be dispensed with.
  • an intermediate layer is arranged between the edge of the filter body and the hardening material.
  • This intermediate layer which can consist of a film or a thin coating, can serve to seal the filter body, so that the subsequent molding of the frame is simplified. Under certain circumstances, the frame can then be cast on or molded on with low pressure. In this case, the viscosity of the hardening material and / or the pressure applied during application play a minor role.
  • the intermediate layer can be molded into the pores of the filter body in such a way that it creates a positive connection between itself and the filter body and between itself and the hardening material.
  • the intermediate layer is porous. Due to its porosity, the intermediate layer then allows hardening material to penetrate into the edge of the filter. The penetration depth can be controlled depending on the porosity. As such porous intermediate layers, perforated films or mats or tiles or the like. made of fiber material.
  • the filter body with a wound, with the curing Material impregnated, band-shaped fleece or fabric or the like. is surrounded.
  • the fleece or the like. ensures that the hardening material does not run off the edge of the filter body before it can harden.
  • the frame is molded onto the edge of the filter body which is compressed to at least partially close the pores.
  • the depth of penetration of the hardening material is limited so that the viscosity and / or hardening time are not important here.
  • the filters shown in the drawing each have a filter body (10), which is composed of several layers (23).
  • the individual layers have a thickness of the order of 3 to 10 mm. They are cut out as sheets from a polyurethane foam.
  • This polyurethane foam has open pores of approximately 10 to 30 ppi (pores per inch).
  • the pores are coated with an adsorbent, in particular activated carbon granules, as is known for example from DE-U 87 17 296.8.
  • the edge of the filter body (10) is bordered by a frame (11, 12, 13, 14, 15, 16) which ensures a tight connection to the filter body (10) so that no bypass flows occur .
  • the filter body (10) is inserted into a frame part (17) with an angular cross-section, on the horizontal leg of which the layers (23) of the filter body (10) rest during assembly, while the vertical leg is at a distance from adheres to the edge of the filter body (10).
  • the area between the edge of the filter body (10) and the vertical leg of the frame part (17) is poured out by a curing material (20), for example a polyurethane composed of two components.
  • the viscosity of this material (20) is matched to the size of the pores of the filter body (10) and to the curing time so that the depth of penetration with which the curing material (20) enters the edge of the filter body (10) is limited.
  • the depth of penetration is limited by line (31).
  • This intrusion depth should be one to five times the diameter of the pores of the filter body (10). This ensures a sufficiently secure connection, while at the same time the available filter cross section is not significantly reduced. Practical tests have shown that a limitation of the penetration depth in the case of pressurelessly poured-in, hardening material is satisfactorily obtained when the viscosity is set and the hardening time is less than 2 minutes with a pore size of 20 ppi. A thixotropic material is suitable for this. With smaller pore sizes, the hardening material can be more fluid and have a longer curing time than with larger pores.
  • a support grid (27) which was inserted in front of the layers (23) of the filter body (10) in the frame part (17) and that is firmly connected to the frame (11).
  • the support grid (27) consists of a metal grid.
  • a corresponding support grid (27) is also placed on the top of the filter body (10), which is then also encapsulated with the hardening material (20) in its edge region, so that it is also in the frame (11) is held.
  • the frame part (17) only represents a shape which does not combine with the hardening mass forming the frame (11).
  • the filter body (10) with the cast-on frame (11) is then separated from this frame part (17), which can be made of metal, for example.
  • the frame (11) then consists exclusively of the hardening material.
  • This type of mold frame can be provided in all other embodiments (with the exception of FIG. 3).
  • the filter body (10) composed of several layers (23) is bordered on both sides with a ring (34) which is circumferential, i.e. protrudes transversely to the filter surface, over the edge of the filter body (10).
  • the rings (34) can be provided with tooth-like approaches with which they are in the outermost position. (23) of the filter body (10) penetrate.
  • the circumference of the preferably rectangular filter body (10) is in the area between the two rings (31) with a fleece or a fabric or the like. provided, which has been wound up in a ribbon-like state. This fleece or fabric, which serves as an intermediate layer (19), has been soaked with the hardening material (20) before application.
  • the hardening material penetrates only to the immersion depth indicated by line (31), which in this embodiment is also determined by the viscosity and hardening time of the hardening material (20), which is set as a function of the pore size.
  • the winding can take place in such a way that the filter body (10) is wound in a device as shown in Fig. 2, i.e. with layers lying in vertical planes (23).
  • the intermediate layer of flies or the like. prevents the hardening material from running off the edge of the filter body (10), which rotates in a device about a horizontal axis during winding.
  • the hardening material (20) is expediently rolled into the edge of the filter body (10) with a pressure roller.
  • the edge of the filter body (10) formed from several layers (23) is bordered with a double-T-shaped frame part (18).
  • the leg of this frame part (18), which is at a distance from the edge of the filter body (10), is provided with openings (30).
  • the hardening material (20) is poured or also rolled into this frame part (18). Due to the setting of the viscosity and the curing time depending on the pore size of the Filter body (10) results in the penetration depth defined by line (31). 3, it is sufficient if the hardening material (20) is only present in the area between the web of the frame part (18) and the edge of the filter body (10).
  • An intermediate layer (21) can be a film extending over the edge into the area of the upper or lower layer, in particular a film made of polyurethane, if the layers (23) consist of polyurethane foam.
  • the hardening material (20) is then only applied to the intermediate layer (21).
  • the application takes place in a two-part form (35, 36) with slight pressure, so that the intermediate layer (21) at least partially presses into the pores of the filter body (10) located in the edge region, so that a certain positive fit is obtained. It makes sense here if a very thin, film-like film is used.
  • sealing is carried out by means of a thin, film-like coating instead of a film.
  • a lacquer can be used for this, provided that this lacquer hardens without the development of gases or vapors, by which the adsorbent of the filter body (10) could be poisoned.
  • the edge of the filter body (10) formed from a plurality of layers (23) has a twofold rule position (22) edged before the edge (15) made of hardening material (20) is attached.
  • the intermediate layer (22) consists of a material which is porous in a defined manner, for example a perforated film or a fleece or the like. made of fiber material.
  • the hardening material (20) penetrates the intermediate layer (22) and penetrates into the edge of the filter body (10) up to the lines (31) with a defined depth. In this embodiment, the penetration depth is therefore not only determined by the viscosity and the curing time of the curing material (20), but also by the permeability of the intermediate layer (22).
  • the hardening material (20) is filled into a mold (37, 38).
  • the form (37, 38) can also be filled with at least slight overpressure in this embodiment.
  • the penetration of the material (20) of the frame (16) molded onto the filter body (10) is prevented by the fact that the pores of the layers (23) of the filter body (10) are closed in the edge region by being pressed together .
  • rings (24) are inserted in the edge area between the individual layers (23) of the filter body (10) made of polyurethane foam.
  • the rings (24) each have a thickness that corresponds approximately to the thickness of the layers (23).
  • the inner edges of the rings (24, 25) are shaped so that there is no abrupt transition between the pressed and non-compressed areas of the layers (23), so that the risk of mechanical damage is low.
  • the layers (23) and the rings (24, 25) are inserted into a two-part mold (39, 40), after which the frame (16) is molded from the hardening material (20). Because in this embodiment by pressing together the edges of the layers (23) a complete tightness is obtained, the introduction of the material (20) can be done with high pressure. It is therefore possible to encapsulate the edges of the filter body (10) with a thermoplastic, which is also referred to as a curable material in the sense of the present application. Of course, it is also possible to inject a material which is adapted to the material of the layers (23), especially the polyurethane foam, from two components, in particular a corresponding polyurethane.
  • the rings (24, 25) can taper at their outer ends, so that in this area the outermost edges of the layers (23) are no longer pressed together, or at least not so strongly, so that the hardening material (20) penetrates into this area can.
  • the upper and the lower ring (25) are made in one piece with a support grid (26) extending transversely across the filter surface.
  • This support grid (26) forms nodes (29) at one or more points. In the area of these nodes (29) there are recesses through which a cannula can be pierced.
  • a hardening plastic mass is injected, which leaves behind a plastic pin (28) which forms the two support grids (26) and also the individual layers (23) and which hardens in this form. Since the plastic pin (28) also penetrates the pores of the layers (23) to a certain extent during this attachment, a connection between deagen (23) is also obtained in this way. Attaching such plastic pins can also be advantageous for solidifying the filter body (10) when there are no support grids (26).
  • frame parts (17; 34; 35, 36; 37.38; 39, 40) correspondingly shaped elements can also be provided, which are removed after the curing material (20) has been introduced.
  • the frames (11, 12, 13, 14, 15, 16) then consist only of the hardening material (20).
  • sealing elements such as all-round sealing strips or the like, attached.
  • These sealing elements can be molded on or cast in. It is also possible to provide only recesses for sealing elements in which they are used, preferably snapped into place.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)

Claims (21)

1. Filtre pour une installation de climatisation d'un véhicule automobile, comportant un corps de filtre formé d'un matériau, disposé en plusieurs couches et comportant des pores ouverts gui sont recouverts avec un agent d'adsorption, notamment des grains de charbon actif, ainsi qu'un châssis en matière plastique entourant le corps de filtre, caractérisé en ce que le châssis (11, 12, 13, 14, 15, 16) a une forme adaptée au corps de filtre (10) et il est prévu entre le corps de filtre (10) et le châssis (11, 16) une liaison maintenant le bord du corps de filtre (10) sur toute son épaisseur grâce à un matériau durci et pénétrant jusqu'à une profondeur prédéterminée dans le bord du corps de filtre (10).
2. Filtre selon la revendication 1, caractérisé en ce que le bord du corps de filtre (10) est entouré par une partie de châssis préfabriquée (17, 18) et en ce que le volume intermédiaire situé entre cette partie de châssis (17, 18) et,le bord du corps de filtre (10) est rempli par coulée du matériau durcissable (20).
3. Filtre selon la revendication 1, caractérisé en ce que le matériau durcissable (20), d'une épaisseur de paroi d'au moins 1,0 mm, dépasse du corps de filtre (10) gui constitue le châssis (14, 15, 16).
4. Filtre selon une des revendications 1 à 3, caractérisé en ce qu'il est prévu une couche intermédiaire (21, 22) entre le bord du corps de filtre (10) et le matériau durcissable (20).
5. Filtre selon la revendication 4, caractérisé en ce que la couche intermédiaire (21) se compose d'une matière déformable et ayant pénétré par pression dans les pores situés dans une zone de bord du corps de filtre (10).
6. Filtre selon la revendication 4 ou 5, caractérisé en ce que la couche intermédiaire (22) est poreuse.
7. Filtre selon la revendication 5 ou 6, caractérisé en ce que la couche intermédiaire (21, 22) est une feuille.
8. Filtre selon une des revendications 4 à 6, caractérisé en ce que la couche intermédiaire (22) est une natte ou une nappe, ou analogue, en matière fibreuse.
9. Filtre selon la revendication 4 ou 5, caractérisé en ce que la couche intermédiaire (21, 22) est une couche de laque.
10. Filtre selon une des revendications 4 à 9, caractérisé en ce que le châssis (14, 15) est formé par injection sur le bord, partiellement colmaté au moyen du corps de filtre (10).
11. Filtre selon la revendication 1, caractérisé en ce que le corps de filtre (10) est entouré par une nappe (19) ou analogue, en forme de bande, enroulée ou stratifiée et imprégnée du matériau durcissable (20).
12. Filtre selon la revendication 1, caractérisé en ce que le châssis (16) est formé sur le bord du corps de filtre (10) gui a été comprimé pour fermer, au moins partiellement, les pores.
13. Filtre selon la revendication 12, caractérisé en ce que le corps de filtre (10) est constitué de plusieurs couches d'éléments de filtre (23) en forme de plaques et en ce que les bords des différentes couches sont respectivement comprimés entre des anneaux (24, 25).
14. Filtre selon une des revendications 1 à 13, caractérisé en ce que le corps de filtre (10) est pourvu d'au moins une grille de soutien (26, 27) gui est ancrée dans le châssis (11, 16).
15. Filtre selon la revendication 13 ou 14, caractérisé en ce qu'au moins un des anneaux (25) forme une seule pièce avec une grille de soutien (26).
16. Filtre selon une des revendications 1 à 15, caractérisé en ce qu'il est prévu, dans le corps de filtre (10) constitué de plusieurs couches (23), plusieurs filets (28) formés par injection du matériau durcissable et liant les couches entre elles.
17. Filtre selon la revendication 16, caractérisé en ce que les filets (28) sont reliés solidement à l'aide d'au moins une grille de soutien (26).
18. Filtre selon une des revendications 1 à 17, caractérisé en ce que le châssis (11, 12, 13, 14, 15, 16) est pourvu d'un ou plusieurs éléments d'étanchéité, de préférence périphériques.
19. Filtre selon la revendication 18, caractérisé en ce que le ou les éléments d'étanchéité sont formés sur le châssis (11, 12, 13, 14, 15, 16).
20. Filtre selon la revendication 18, caractérisé en ce que le ou les éléments d'étanchéité sont des profilés d'étanchéité incorporés au moulage dans le châssis (11, 12, 13, 14, 15, 16).
21. Filtre selon la revendication 18, caractérisé en ce que les châssis (11, 12, 13, 14, 15, 16) sont pourvus d'évidements formés,au moulage,pour des éléments d'étanchéité.
EP89119024A 1988-11-22 1989-10-13 Filtre pour système de climatisation de véhicule automobile Expired - Lifetime EP0370222B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19898916168 DE8916168U1 (de) 1988-11-22 1989-10-13 Filter für eine Klimaanlage eines Kraftfahrzeuges

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3839352 1988-11-22
DE3839352A DE3839352A1 (de) 1988-11-22 1988-11-22 Filter fuer eine klimaanlage eines kraftfahrzeuges

Publications (3)

Publication Number Publication Date
EP0370222A2 EP0370222A2 (fr) 1990-05-30
EP0370222A3 EP0370222A3 (en) 1990-12-12
EP0370222B1 true EP0370222B1 (fr) 1992-06-03

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ID=6367603

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119024A Expired - Lifetime EP0370222B1 (fr) 1988-11-22 1989-10-13 Filtre pour système de climatisation de véhicule automobile

Country Status (2)

Country Link
EP (1) EP0370222B1 (fr)
DE (2) DE3839352A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE3839352A1 (de) * 1988-11-22 1990-05-23 Sueddeutsche Kuehler Behr Filter fuer eine klimaanlage eines kraftfahrzeuges

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DE4027799C2 (de) * 1990-09-01 1995-04-20 Hasso Von Bluecher Geruchsfilter für Fahrzeugkabinen
DE4040104A1 (de) * 1990-12-16 1992-06-17 Behr Gmbh & Co Filter fuer eine klima- oder heizungsanlage fuer ein kraftfahrzeug
DE4105724C2 (de) * 1991-02-23 1993-10-21 Daimler Benz Ag Belüftungseinrichtung für den Innenraum eines Fahrzeugs, insbesondere Heizungs- bzw. Klimaanlage für ein Kraftfahrzeug
DE69418671T2 (de) * 1993-10-15 1999-12-16 Corning Inc Verfahren zur Herstellung von Körpern mit imprägnierten Poren
US5882608A (en) 1996-06-18 1999-03-16 Minnesota Mining And Manufacturing Company Hybrid mounting system for pollution control devices
DE29703827U1 (de) * 1997-03-03 1997-04-17 Behr Gmbh & Co Filter, insbesondere für eine Klimaanlage eines Kraftfahrzeuges
DE29709719U1 (de) * 1997-06-04 1997-08-14 Behr Gmbh & Co Filter
JP2001239121A (ja) * 2000-03-02 2001-09-04 Toyobo Co Ltd フィルターユニットおよびその製造方法
EP2684591B1 (fr) 2012-07-11 2019-09-04 Mann + Hummel Gmbh Filtre à air pour l'air intérieur de cabines de véhicules, de machines agricoles, de machines de construction et de machines de travail
DE102013011511A1 (de) 2012-07-12 2014-01-16 Mann + Hummel Gmbh Filtereinrichtung, insbesondere für die einer Brennstoffzelle zuzuführenden Luft

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DE2137309C3 (de) * 1971-07-26 1979-08-02 Purolator Filter Gmbh, 7110 Oehringen Filter mit einem aus einem Zickzack förmig gefalteten, mit thermoplastischem Kunstharz imprägnierten Filterpapierstreifen bestehenden Faltblock
DE2166433A1 (de) * 1971-11-09 1974-01-10 Marquet & Cie Noel Mit rahmen versehene filter und verfahren zu ihrer herstellung
US3941034A (en) * 1974-07-11 1976-03-02 Carl Helwig Filter attachment for automobile passenger compartment air intake
IT1179369B (it) * 1984-05-15 1987-09-16 Ital Idee Srl Gruppo filtrante multiplo, particolarmente per impianti di aerazione e condizionamento per autoveicoli e ambienti chiusi, munito di mezzi di controllo dell'efficienza
DE3441918C1 (de) * 1984-11-16 1986-04-17 Knecht Filterwerke Gmbh, 7000 Stuttgart Plattenförmiger Filtereinsatz mit angeschäumter Randeinfassung
DE3524431A1 (de) * 1985-07-09 1987-01-22 Knecht Filterwerke Gmbh Plattenfoermiger filtereinsatz
DE8717296U1 (fr) * 1987-06-11 1988-07-07 Helsa-Werke Helmut Sandler Gmbh & Co Kg, 8586 Gefrees, De
DE3839352A1 (de) * 1988-11-22 1990-05-23 Sueddeutsche Kuehler Behr Filter fuer eine klimaanlage eines kraftfahrzeuges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839352A1 (de) * 1988-11-22 1990-05-23 Sueddeutsche Kuehler Behr Filter fuer eine klimaanlage eines kraftfahrzeuges

Also Published As

Publication number Publication date
EP0370222A3 (en) 1990-12-12
EP0370222A2 (fr) 1990-05-30
DE3839352C2 (fr) 1992-12-10
DE58901605D1 (de) 1992-07-09
DE3839352A1 (de) 1990-05-23

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